Improvement in pocket-cutlery



J.' W. AYERS.

POCKET CUTLERY.

185 oez. Patented Dec. 5, me.

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JOHN W. AYERS, OF WEST MERIDEN, CONNECTICUT.

IMPROVEMENT lN POCKET-CUTLERV.

Specification forming part of Letters Patent No. 185,062, dated December5,1876; application filed May 13, 1876.

lowing is a full, clear, and exact description of the saine, referencebeinghadto the accompanying drawing, which forms part of thisspecification.

This invention consists in a novel construction of pocket-cutlery,whereby the inner scale, whichis cast in one piece with the bolster and`the tip, has also cast on its outer sides or surfaces ribs, which notmerelyl serve to hold the covering-scale in position on the inner scale,but also materially contribute to stiffen the latter. The invention alsoconsists in a cast inner scale, with the spring-s pivot cast in one'piece with it, and having the blade-pivot embeddedin said casting.

A pocket-knife constructed in accordance with this invention has itsblade or blades and spring secured in their respective positions, andthe covering-scale secured in its position during and by the operationof cast ing the inner scale with its attached bolster and tip.

Said invention essentially differs from that described in Letters Patentissued to me March l2, 1873, in which the inner scale was of perforatedsheet metal, and a filling of inolten metal was used to unite thecovering-scale with the inner scale, also to form and unite the bolsterwith the latter, and in which the blade and spring pivots wereseparately and subsequently inserted through the scale or scales.

Figure l represents a back view. of a singleblade pocket-knifeconstructed in accordance with myinvention, showing the blade extendedor open; Fig. 2, a transverse section of the same on the line w and Fig.3a further transverse section on the line y y. Fig. 4 is a longitudinalsection ofthe knife in a plane at right angles to Fig. 1, showing amodilied construction for uniting the covering-scale with the inner one;and Fig. 5, a transverse section of the same on the line z z.

The inner scale a is cast in a mold, and may be of White or othersuitable metal, and has stiftening-ribs b b cast at the same time alongits outer sides or surfaces, also the-bolster o and tip d. Thestiffening-ribs b b have two functions or uses-that is to say, they notonly serve to strengthen the cast inner scale a, but also hold thecovering-scale sections f f in 'position by entering longitudinalgrooves e e in the inner faces thereof. These grooves may either be of adovetailed construction, as in my former patent hereinbefore referredto, and as shown in Figs. l and 2, whereby the ribs b b, ofcorresponding configuration, serve to lock as well as to hold thecovering-scale or scale-sections in position, or the grooves e e may beconstructed of a form which simplyv Y serves to hold the covering-scalein position transversely of its width, (the ribs b b being ofcorresponding configuration,) and riveting projections g g be cast onthe ribs, and, by entering correspondingly-shaped holes in thecovering-scale, serving, in conjunction with the ribs, to lock or securethe coveringscale sections in all directions, as clearly shown in Figs.'4 and 5 of the drawing. grooves ee may either extend throughout thelength of the scales, or only partially throughout their length, or beof a broken or interrupted construction throughout their length.Furthermore, the cast inner scale a. has formed at the same time withit, in the process of casting, the pivot n of the spring k, which actson the back ofthe blade h, likewise the back support for the spring atthe tip d, said springk being suitably inserted in the Inold in whichthe inner scale a is cast. Said inner scale has also the blade-pivot Zloosely embedded in and projecting through it and into the bolster c,with rivet-heads or swelled ends, as shown in Figs. l, 3, and 4, byrunning the metal in the mold in the formation of the inner scale a andbolster c round said pivot l, which, to-

gether with the blade h, is suitably inserted in the mold for thepurpose.

In this Way the entire knife may be made or finished in the mold withthe exception of exvternally dressing the covering-scaleff-that is tosay, its inner scale, covering-scale or scale-sections, bolster, tip,blade, and spring all be secured in their respective relative' orworking positions by a single casting, with or without the rivet orpivot heads visible on the The ribs b b and I exterior of thecovering-scale. By such improvement. I am enabled to producepocketontlery atJ a much reduced cost and of a superior description.

I claiml. The inner scale a, cast in one piece with the bolster c andtip d, and with ribs b b along its outer sides or surfaces, for thepurpose of stiiningthe cast inner scale, and of uniting the latter withthe covering-scale sections f f, substantiallyas specified. u

2. The inner scale a, with the knife-bolster and tip, cast not only inone piece with each other, but also with the pivot n of the assembledblade-spring, essentially as described.

3. The inner scale a, with the bolster and tip,oast in 011e piece witheach other7 and with the pivot: 'n of the blade-spring, in combinationwith the independently-embed(led blade-pivot; l, and theassembled bladeh and spring k, substautially as specified.

JOHN W. AYERS. -Witnesses:

JOHN W. TAYLoR, FRED. H. TAYLOR.

